RS4 quattro cabriolet
with an electro-hydraulic hood.
27th February 2006.
Just a few months after the launch of
the RS 4 saloon (sedan) version in late 2005, Audi's
family will widen its options further this summer, with
its first time offering of the four-seater RS
4 Cabriolet and the RS
4 Avant (break).
As a high-performance product from quattro
GmbH, the RS 4 family has numerous new features to
Most notably, there is the V8 engine
with an output of 420 bhp. This is the first time that a
manufacturer has combined petrol direct injection with a
high-revving concept. Engine speeds of up to 8,250 rpm are
roof can be operated (21 seconds) at up to
speeds of 30 km/h.
Another highlight is the suspension
with the latest generation of quattro permanent four-wheel
drive and Dynamic Ride Control.
The Cabriolet and Avant have been
subjected to a rigorous regime of weight reduction
measures to make sure that they are equally sporty. Even
though the engineers have systematically applied
lightweight construction principles, all RS 4 versions
feature luxurious equipment that singles out the Audi RS 4
as a high-performance vehicle suitable for everyday
RS 4 Avant - The first RS 4
generation was available exclusively as an Avant, because
it was clear that there was market demand for that body
Although in production for only
slightly more than one and a half years, sales of the
first-generation RS 4 Avant topped 6,000 units. Incentive
enough to include this attractive body version in the
height of RS 4 is 30 millimetres lower
than that of the standard A4.
The single-frame radiator grille with a
rhombus-pattern grid, the additional air inlets at the
front end and the alloy wheels developed specially for the
RS 4, together with the flared wheel arches, all set the Audi
RS 4 Avant apart from a
standard A4. Flared sills and lower door trims coordinated
with the sills are other differentiating features. Then
there are the RS 4 badges at the front and rear, as well
as on the side rubbing strips.
Over and above providing visual
accents, the rear apron with the two large, oval tailpipes
and roof spoiler are functional too.
Another example: the ride height of the
Audi RS 4 Avant, Cabriolet and their saloon counterpart is
30 millimetres lower than that of the standard A4. To
accommodate this change, the track of both axles has been
widened. As a result, he car not only sits more
unwaveringly on the road, but also handles better.
load area for generous storage capacity in
the RS 4 Avant.
In any case, the RS 4 Avant is not just
about sports. It's meant to be practical for everyday too.
Its load area combines an exclusive atmosphere with
optimum usability and a versatile layout. The variable
load-area floor provides generous storage capacity. It can
be opened wholly or in part, or removed altogether. The
low loading lip and smooth side edges facilitate loading
of objects of up to one metre in width. The
smooth-surfaced inner side panels have no bulges, making
the load area look tidy at all times. A full range of
clever details such as a net for small items and lashing
points enhance the practical utility of the Audi RS 4
A virtually level load area is made by
folding down the divided rear seat. The luggage cover and
load guard are housed in a space-efficient housing that
can be folded away together with the seat back.
4 quattro was launched first as a saloon
late last year.
RS 4 Cabriolet - Never before
has an open-top production Audi had so much power on tap:
the RS 4 Cabriolet puts the brand at the forefront of
the four-seater convertible segment. The 420 bhp V8 engine
transforms the open-top RS 4 into a veritable sports car
that is also ideal for relaxed cruising, with the
unmistakable sound of the V8 engine. Particularly with its
roof open, the hearty sound of the eight-cylinder engine
reaches the occupants' ears unfiltered.
Visually, the Cabriolet is recognisable
at first glance as a member of the RS 4 family. The
rhombus-pattern single-frame grille, the additional air
outlets and the new RS 4 wheels lend the open-top
four-seater a highly dynamic flavour.
Inside, the seats are the main feature
distinguishing the RS 4 Cabriolet from the Avant and
saloon. Whereas the other two body versions are equipped
with RS bucket seats, the Cabriolet comes with sports
seats as standard, though RS bucket seats can be ordered
as an option. The most important information units in the
Cabriolet are combined beneath a domed cover.
single-frame radiator grille with a
The electro-hydraulic hood can be
opened entirely automatically in 21 seconds. The roof can
be operated at up to speeds of 30 km/h. This makes it
possible to open or close the roof when out and about in
town, for instance, or before parking the car.
The glass rear window is heated to
guarantee a clear view to the rear in all weather.
New fabrics of a higher material
density and an additional cushioned mat around the C-post
keep the noise level inside the car with the hood almost
on a par with the saloon. As with the saloon and Avant,
the ride height of the Cabriolet has been lowered by 30
millimetres compared with the A4 Cabriolet. This
emphasises the car's sporty appearance.
Even if the Audi Cabriolet's weight has
been rigorously trimmed down, in common with all other RS
4 models no corners have been cut with either its
equipment or its standards of safety.
The further improved crash strength of
the latest A4 Cabriolet generation has likewise benefited
the open-top RS 4. The front and side airbags are standard
features, as are the rollover bars that extend behind the
rear seats in the event of the car overturning.
Petrol direct-injection: 420 bhp V8 engine
revs up to 8,250 rpm.
Engine - The 420 bhp V8 engine
(4,163 cc) revs up to a speed of 8,250 rpm, breaking
the barrier of 100 bhp per litre (100.88 bhp / 1000 cc
exactly). The highly compact power unit reaches its peak
torque of 430 Nm at 5,500 rpm. At least 90 percent of the
maximum torque is available between 2,250 and 7,600 rpm,
for excellent pulling power at all times, without frequent
Audi's RS 4 saloon employs FSI
technology. The petrol direct-injection unit delivers
enhanced power output based on more efficient combustion
of the fuel/air mixture. The engine is also more
responsive. The performance of the RS 4 clearly
demonstrates this progress: it reaches the 100 km/h mark
in 4.8 seconds (Avant 4.9 seconds, Cabriolet 4.9 seconds),
and 200 km/h in 16.6 seconds (16.9 seconds; 17.5 seconds).
On all three versions, the speed is governed
electronically when the needle reaches 250 km/h.
has deployed the high-revving engine principle for the
first time in the RS 4. The V8 power unit is ultra-compact
in its dimensions, fitting snugly into the engine
compartment of the RS 4 without necessitating any
modifications to the body. The camshaft and ancillaries,
with the exception of the alternator, are all driven by a
chain for easy maintenance. An all-new development, the
eight-cylinder unit powering the RS 4 includes such
features as modified pistons and con rods, a new
crankshaft together with its bearings, and new cylinder
ventilated discs behind alloy wheels
developed for the RS 4.
A dual-branch exhaust system with
enlarged pipes provides even higher power output. These
extensive measures have enabled the 4,163 cm3 engine to
break through the magical 100 bhp per litre barrier.
The car's power-to-weight ratio is at a
remarkable 3.93 kg per bhp, a figure that only the most
thoroughbred sports cars were able to offer just a few
years ago. The figure for the Avant is only slightly
Drivetrain - The latest
generation of quattro permanent four-wheel drive,
which featured first in the RS 4 saloon and offers a
asymmetric/dynamic torque split of 40 (front axle) to 60
(rear axle) in conjunction with the self-locking centre
differential, is one of the main reasons why the RS 4 is
still able to provide traction when other drive concepts
have long since reached their limits. quattro drive is
further enhanced by the DRC suspension system (Dynamic
Ride Control), which significantly reduces the rolling and
pitching movements of the vehicle about its transverse
axis and rear axle.
width of the seat base and seat back can
be adjusted electrically.
The brakes adopt an 18-inch format for
optimum deceleration, with floating, perforated,
ventilated brake discs measuring 365 millimetres in
diameter at the front, and other likewise perforated,
ventilated brake discs at the rear with a diameter of 324
The latest generation of ESP has been
modified specifically to intervene later and for shorter
periods. It is also possible to disable the ESP in two
stages. In the first stage only the traction control (ASR)
function is disabled; the other ESP functions remain fully
active. In the second stage the ESP is completely
deactivated, including the traction control. All
electronic control then ceases.
The servotronic steering has been
specially tuned with direct response and short travel.
Audi has likewise adapted the six-speed
gearbox to the handling requirements of a sports
car, with its precision navigating through the shift
gate and its short travel.
features include a deluxe automatic air
conditioning system, the concert radio
system, Audi parking system at the front
and rear, high-intensity xenon plus headlights
an RS logo worked into the flat-bottomed
RS sports steering wheel as well as into
the seat upholstery and door sill,
extensive use of carbon fibre and
aluminium, engine start/ stop at the push
of a button.
Equipment - Although weight was
one of the main considerations in the development of the
Audi RS 4, the car boasts an extensive range of equipment.
Standard features include a deluxe automatic air
conditioning system, the concert radio system, central
locking and electric windows , Audi parking system at the
front and rear, high-intensity xenon plus headlights, an
RS logo worked into the flat-bottomed RS sports steering
wheel as well as into the seat upholstery and door sill,
extensive use of carbon fibre and aluminium, engine start/
stop at the push of a button.
Two of the functions controlled
directly from the RS sports steering wheel are the lap
timer and the Sport button. Dynamic Ride
Control (DRC) provides sporty, dynamic handling by
significantly reducing body roll and pitch, while
nevertheless providing an exceptionally high standard of
ride comfort for a sports car.
All RS 4 models come with 18-inch cast
aluminium wheels of 5-spoke design. As an optional extra,
there are 19-inch wheels of a double 7-spoke design.
In the saloon and Avant, the front
passengers get sports bucket seats providing maximum
support even when the car is driven energetically. The
width of the seat base and seat back can be adjusted
electrically as preferred. Even greater lateral support
can be obtained by pressing the Sport button. As well as
calling up a modified, more spontaneous throttle response
and an even more sporty sound from the exhaust system,
this function inflates the seat side sections, supporting
the driver even more securely.
is equipped with leather-upholstered sports seats, taking
the higher comfort requirements of Cabriolet drivers into
account. Here too, RS bucket seats are available as an
Audi's optional extras for the RS 4
include the navigation
system plus and the
symphony radio system. On the RS
4 saloon and RS 4 Avant,
various exterior mirror versions (optionally also with
fold-in function), the sports suspension plus and the
comfort package are also available. This comfort package
comprises features such as cruise control and heated front
Other customisation options are offered
through the quattro
GmbH services, all available from Audi